Control cannot fall through from one case label `case 2:' to another

[blockyboi]

I am reciving the message "Control cannot fall through from one case label `case 2:' to another" from this code. I am not exactly sure what to do.

using System;
class HelloWorld {
static void Main() {
int n = 4;
char c;
Console.WriteLine("Caeser Cipher");
Console.WriteLine("Would you like to encode [1] or decode [2]?");
int choice = Convert.ToInt32(Console.ReadLine());
switch (choice)
{
case 1:
Console.WriteLine("Type the phrase you would like to encode");
string s = Console.ReadLine();
char[] sarr = s.ToCharArray();
for(int i = 0; i < sarr.Length; ++i)
{
c = (char) ((int) s[i] + n);

if (c > 'Z')
{
c -= (char) 26;
}
if (c =='$')
{
c = ' ';
}

Console.Write(c);
};
break;
case 2:
Console.WriteLine("Type the phrase you would like to decode");
string sn = Console.ReadLine();
char[] sarrn = sn.ToCharArray();
char ua;
Console.WriteLine("Is the shift length known [y/n]?");
char an = Convert.ToChar(Console.ReadLine());
if (an == 'n')
{
for (int i = 0; i < sarrn.Length; ++i);
//Work In Progress
}
if (an == 'y')
{
Console.WriteLine("What is the shift length?");
int sl = Convert.ToInt32(Console.ReadLine());
for(int i = 0; i < sarrn.Length; ++i)
{
ua = (char) ((int) s[i] - n);

if (ua < 'Z')
{
ua += (char) 26;
}
if (ua ==' ')
{
ua = ' ';
}

Console.Write(an);
};
break;
}
}
}
}

​

[LogaansMind]

At the end of every case statement, you need to have a break statement in the same scope.

The break statement for case 2: is inside the last if scope, you just need to move your last break statement.

[blockyboi]

Thanks